Phosphinic acid

CAS Registry Number®

6303-21-5

CAS Name

Phosphinic acid

Molecular Formula

H3O2P

Molecular Mass

66.00

Cite this Page

Phosphinic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=6303-21-5 (retrieved 2025-03-28) (CAS RN: 6303-21-5).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    26.5 °C

  • Density (2)

    1.479 g/cm³ @ Temp: 20 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/H3O2P/c1-3-2/h3H2,(H,1,2)

InChIKey

InChIKey=ACVYVLVWPXVTIT-UHFFFAOYSA-N

SMILES

[PH2](=O)O

Canonical SMILES

O=[PH2]O

Other Names for this Substance

  • Phosphinic acid
  • Phosphine oxide, hydroxy-
  • Hypophosphorous acid
  • Phosphonous acid
  • Hydroxyphosphine oxide

View All

Deleted or Replaced CAS Registry Numbers

60062-19-3

CAS INSIGHTSTM
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